At the end of the year 2008, GitHub announced GitHub Pages (https://github.com/blog/272-github-pages), a static-site hosting service. Static sites have met a great rise during the past years and GitHub played a big part in it. A static site is a site that contains pages written in HTML, CSS, and Javascript. No server code, such as php, ruby, and Python is included.
In an interesting post on April 27, 2015 (https://github.com/blog/1992-eight-lessons-learned-hacking-on-github-pages-for-six-months), GitHub released some statistics of the GitHub page usage over time:
The growth is exponential and shows that a great deal of users trust GitHub to host their personal or organization sites.